press the orange circles to generate red
blocks(enemies) and fill the screen as much as
possible with still being able to navigate to the
finish (the large blue block). if you finish, you
receive one point for each enemy on the screen.

Not much to it. You can tell if something is
possible or impossible and at that time takes no
skill whatsoever to get through the enemies after
that. It is just if you are lucky enough in the
placement of the enemies.